At best, Kyle could sue Huber's estate, which isn't likely worth much and sorta a dick move that won't play well vs a jury.Pretty clear they intend to sue Kyle and the Police
Kyle needs to sue them first. Kenosha Police should fight the lawsuit as well. The Mayor however should be sued along with the Governor.
Meanwhile, although an acquittal is certainly helpful vs wrongful death, a Huber's Estate v Rittenhouse isn't an instant dismissal. They'll certainly can have a lawsuit go to trial if they want to, at which point who knows? The stakes are certainly less, and IDK if you need a unanimous decision for civil trials in Wisconsin.